Legal claims defining the scope of protection. Each claim is shown in both the original legal language and a plain English translation.
1. A print data processing apparatus comprising: a generating unit configured to generate image information and attribute information from print data; a converting unit configured to convert the attribute information generated by the generating unit; a compressing unit capable of compressing the image information generated by the generating unit and the attribute information converted by the converting unit; and a transmitting unit configured to transmit the image information and the attribute information compressed by the compressing unit, as transfer data, to a printing apparatus.
A print data processing system prepares data for printing by first creating image data and attribute data from the original print job. It then converts the attribute data to a more compressible format. Next, it compresses both the image and the converted attribute data. Finally, it transmits this compressed data to a printer for printing. This process optimizes the data for efficient transfer to the printer.
2. The print data processing apparatus according to claim 1 , further comprising: a determining unit configured to determine whether the image information and the attribute information compressed by the compressing unit satisfy a transfer condition, wherein the transmitting unit transmits the transfer data to the printing apparatus, in a case where the determining unit determines that the transfer condition is satisfied.
The print data processing system from the previous description further includes a check to determine if the compressed image and attribute data meet certain transfer criteria. If the data meets these criteria, it sends the data to the printer. This ensures that the transfer process is efficient and meets the printer's requirements.
3. The print data processing apparatus according to claim 2 , further comprising: a control unit configured to perform control so that the converting unit performs a further conversion of the attribute information converted by the converting unit, in a case where the determining unit determines that the transfer condition is not satisfied, wherein the determining unit further determines whether the transfer condition is satisfied, by using the attribute information converted under the control of the control unit.
Building upon the previous description, if the compressed print data does not meet the transfer criteria, the print data processing system re-processes the attribute data by converting it again to make it more suitable. The system then re-evaluates whether the re-processed data now meets the transfer criteria. This iterative process aims to optimize the data for efficient transfer.
4. The print data processing apparatus according to claim 2 , wherein the transfer condition is determined based on an index of performance of the printing apparatus, a network band between the print data processing apparatus and the printing apparatus, the size of the compressed image information, and the size of the compressed attribute information.
In the print data processing system described previously, the transfer criteria used to determine if the compressed data is suitable for sending to the printer depend on several factors. These factors include the printer's performance capabilities, the network bandwidth between the processing system and the printer, the size of the compressed image data, and the size of the compressed attribute data. This comprehensive evaluation ensures efficient and successful printing.
5. The print data processing apparatus according to claim 1 , wherein the transmitting unit transmits the transfer data containing conversion history information indicating a history of conversion processes performed on the attribute information.
The print data processing system described earlier includes a feature where it transmits data that contains the steps taken to convert the attribute information. This "conversion history" allows the printer to understand how the attribute information was transformed, which can be used during printing or debugging.
6. The print data processing apparatus according to claim 1 , wherein the converting unit converts a first attribute contained in the attribute information into a second attribute.
In the print data processing system from the initial description, the system modifies the attribute information by changing one attribute type into another type. For example, a complex or less-compressible attribute can be converted into a simpler, more compressible attribute. This conversion helps reduce the overall data size for printing.
7. The print data processing apparatus according to claim 1 , wherein the converting unit converts an attribute which has a low compression ratio, contained in the attribute information, into an attribute which has a high compression ratio.
Referring back to the initial print data processing system, the attribute conversion process focuses on attributes that are difficult to compress. The system targets these attributes and converts them into attributes that can be compressed more easily. This selectively improves the overall compression ratio of the print data.
8. The print data processing apparatus according to claim 1 , wherein the converting unit converts attributes contained in the attribute information in a preset order.
The print data processing system described initially performs attribute conversion in a specific, predetermined sequence. The system will always process certain attributes before others, ensuring a consistent and potentially optimized conversion process.
9. The print data processing apparatus according to claim 1 , wherein the converting unit converts an attribute having a small amount of region, of attributes contained in the attribute information.
In the initial print data processing system, the attribute conversion process prioritizes attributes that cover a small area within the print data. Converting smaller attributes first may allow for more efficient compression of the overall print job.
10. The print data processing apparatus according to claim 1 , wherein the converting unit converts a first attribute of attributes contained in the attribute information into a second attribute having a high correlation with the first attribute.
The print data processing system described earlier converts an attribute into another attribute that is highly related. By finding attributes with strong relationships, the system can minimize the information lost during the conversion while maximizing compressibility.
11. The print data processing apparatus according to claim 1 , wherein in a case where a region of a portion of the attribute information matches a predetermined pattern, the converting unit converts the matching region into a pattern having a high compression ratio.
Within the print data processing system from the initial description, if a portion of the attribute data matches a predefined pattern, the system replaces that pattern with a different pattern that compresses better. This pattern-based conversion optimizes specific repeating elements within the data.
12. A print data processing apparatus comprising: a receiving unit configured to receive transfer data containing at least image information and attribute information; an extracting unit configured to extract the attribute information from the image information contained in the transfer data; an updating unit configured to update the attribute information contained in the transfer data, based on the attribute information extracted by the extracting unit; and a printing unit configured to perform a printing process based on the image information contained in the transfer data and the attribute information updated by the updating unit.
A print data processing system receives data that includes both image and attribute information. The system then extracts attribute information directly from the received image data. It uses this extracted information to update the original attribute information. Finally, it performs the printing process using the image data and the updated attribute information.
13. The print data processing apparatus according to claim 12 , further comprising: a determining unit configured to determine whether the received transfer data contains conversion history information indicating a history of conversion processes performed on the attribute information, wherein in a case where the determining unit determines that the conversion history information is contained, the extracting unit extracts attribute information from the image information contained in the transfer data, and the updating unit performs a further update of the attribute information contained in the transfer data, based on the conversion history information.
The print data processing system from the previous description first checks if the received data contains conversion history information. If the data includes this history, the system uses it to extract attribute information from the image and further update the original attribute information using the conversion history. This allows the printer to reverse or refine the attribute conversion performed earlier.
14. A print data processing method comprising: a generating step of generating image information and attribute information from print data; a converting step of converting the attribute information generated in the generating step; a compressing step capable of compressing the image information generated in the generating step, and the attribute information converted in the converting step; and a transmitting step of transmitting the image information and the attribute information compressed in the compressing step, as transfer data, to a printing apparatus.
A print data processing method involves generating image and attribute information from the original print data. The method converts the attribute information into a more compressible format. The image and converted attribute information are then compressed. Finally, this compressed data is transmitted to the printer for printing.
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September 9, 2014
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